Python might be the one language that isn't true for. In my Python experience, the Google protobuf library is frustratingly slower than the built-in json module

Python might be the one language that isn't true for. In my Python experience, the Google protobuf library is frustratingly slower than the built-in json module for any data structures I've cared about, which is why things like pyrobuf exist to solve that performance problem: https://github.com/appnexus/pyrobuf https://github.com/appnexus/pyrobuf